When I tried to search QualityPoint, WDYL showed some relevant results and it showed some irrelevant results also. Obviously it is difficult to get relevant results in all Google products for most of the search words. So, the WDYL site will be more useful for promoting Google products among beginners. And, it can be used as a bookmarking for various Google products. Apart from this promotion and bookmarking, this WDYL may not add any additional value for the users.

Note that few days back, I had announced about OnePass for accessing all the QualityPoint products.
It seems Google's WDYL is something similar to our OnePass.

Since Google is planning to use WDYL for promoting the Google products, I think our onepass approach will be helpful to promote our products and websites. So, I am planning to focus more on promoting our OnePass. I will be giving PR3 link for any one who includes link for our onePass site in their blog/site.

Since we are having good experience in php cURL, I think we can implement WDYL like promotion plan in our OnePass site.